Telephone-transmitter



(No Model.)

E.A.SGH0 ETTEL.

TELEPHONE TRANSMITTER. N0. 271,924. Patented Feb.6,1883.

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the positive wire and the other with the negasuitable conducting material, thin metal being UNITED STATES PATENT OFFICE.

EDWARD A. SGHOETTEL, OI" BROOKLYN, NEW YORK.

TELEPHONE-TRANSMITTER.

SPECIFICATION forming part of Letters'Patent No. 271,924, dated February 6, 1883.

Application tied March 18,1832. (Ndmodei.)

Toall whom it may concern: y

Be it known thatL-EDWAED A. SoHoE'rrEL, ofthe city of Brooklyn, in the county of Kings and State of New York, have invented an Improvementin Telephone-Transmitters, of which the following is a specification.

My invention has reference to telephonetransmitters; and it consists of two sheets of plates' of conducting material, with lead or other metal shot or globules interposed between them, and the whole arranged within a case, one of said plates being connected with tive wire, all of which is more fully set forth hereinafterand referred to in the accom panying. drawing, which forms part ot' the following specification.

rIfhe object of this invention is to provide means to prevent clogging, which is the result when powder is used between the plates, and in the construction set out in this specification In the drawing is shown a sectional elevation ot'my improved transmitter.

A is the case, which may be made ot' wood, hard rubber, Sto., as usual, and is provided with the cover lor cap B, having the aperture C. y

Secured to the bottom of the case A is the conductor-plate D, which may be made ofany preferred, which is connected with one end, H, of the wire. Upon this plate is arranged a single layer of metal shot or globules, E, and

F, preferably made of carbon, which is connected with the other end, G, of the wire.

In using this instrument it is laid iiat, asl

shown, or slightly inclined. By using the globular bodies E between the plates D and F theirmobility is insured and no clogging can result, while theinstrument transmits equally well at all times.

I am aware of the patent to Berliner, N o. 254,190, and do not claim anything therein shown or described.

I am also aware of the patent granted to Rogers, No. 252,550, and claim nothing therein shown or described, my invention being for a specific construction dierin g from all others.

Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is-

In a telephone-transmitter, a case, A, with its cover B, having aperture G, in combination' with plate D, of conducting material, secured in the bottom of said case and connected with one pole of the line-wire, a single layer ofshot or metal globules, E, resting upon said plate, and a plate of carbon or other conducting material, F, resting loosely upon said shot or globules and connected with the other pole of said line-wire. y

In testimony of which invention I hereunto set my hand.

EDWARD A. SOHOETTEL.

Witnesses J. MILTON STEAR-Ns, Jr.,

upon them rests the upper conducting-plate,

GEO. R. ALEXANDER. 

